Ardeadoris scottjohnsoni was described from Hawaii and seems to be endemic to the Hawaiian Islands.
This nudibranch has a soft and white body with a yellow-edged mantle border. Its gills have white bases with black tips and the rhinophores have transparent bases and black clubs, with a thin electric-blue vertical line.
Similat to Peltodoris Fellowsi (which is also white with black gills and rhinophores. The latter species, however, has a firm body and lacks the gold marginal line).